6 Best Fender Skirts For Fuel Efficiency For Road Trips
Boost your road trip fuel economy with our top 6 fender skirt picks. Learn how these aerodynamic upgrades reduce drag to save you money on every mile driven.
When you’re staring down a thousand-mile stretch of highway, every bit of drag you shave off translates directly into more miles per gallon and less strain on your tow vehicle. Fender skirts aren’t just aesthetic trim pieces; they are critical aerodynamic components that manage the turbulent airflow around your wheel wells. Upgrading these often-overlooked parts is one of the smartest, most cost-effective ways to optimize your rig for long-distance travel.
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The Aerodynamics of RV Fender Skirts
Most RVs are built with a "brick-like" profile that fights the wind at every turn. When air hits the open wheel well, it creates a pocket of high-pressure turbulence that acts like a parachute, pulling your rig backward and forcing your engine to work harder. By smoothing out this area, you effectively reduce the drag coefficient of the entire vehicle.
Think of fender skirts as the fairings on a high-performance motorcycle. They don’t just cover the tire; they create a cleaner transition for air to flow along the side of the trailer. Even a modest reduction in wind resistance can lead to noticeable improvements in fuel efficiency during high-speed highway cruising.
Icon Direct ABS Plastic Fender Skirts
If you are looking for a direct replacement that balances weight and durability, Icon Direct is the industry standard. Their ABS plastic skirts are vacuum-formed to match the specific contours of many popular trailer models, ensuring a tight fit that doesn’t leave gaps for air to catch.
These are perfect for the DIYer who wants a factory-fresh look without the headache of custom fabrication. Because they are lightweight, they won’t add unnecessary payload to your axles. If you own a common trailer brand, this is the most reliable, "set it and forget it" choice on the market.
RecPro Custom-Fit RV Fender Skirts
RecPro takes a more tailored approach, offering custom-fit options that focus on seamless integration. When you have a non-standard wheel well or an older rig, generic parts often leave air gaps that defeat the purpose of the upgrade. Their skirts are designed to hug the body of the RV tightly, effectively sealing off the wheel well area.
I recommend RecPro for owners of vintage or unique trailers where a standard part simply won’t cut it. They are slightly more involved to install, but the payoff is a significantly cleaner aerodynamic profile. If you prioritize precision over convenience, these are the skirts for you.
DuraShield Heavy-Duty Fender Flares
Sometimes, the road demands more than just aerodynamics; it demands impact resistance. DuraShield products are built thicker than standard OEM plastic, designed to withstand the barrage of road debris, ice, and gravel that inevitably kicks up during long road trips.
These are the right choice for the full-time traveler or the boondocker who frequently navigates gravel roads. While they are slightly heavier, the trade-off in longevity is worth it if you want to avoid replacing cracked plastic every few seasons. If you plan on putting serious miles on your rig, look no further.
Stromberg Carlson Contour Skirts
Stromberg Carlson is a legacy name in the RV world for a reason: they understand the intersection of form and function. Their contour skirts are engineered with a slight flare that helps direct air away from the tire area more efficiently than flat, basic covers.
These are ideal for the mid-range traveler who wants an upgrade that performs better than stock without breaking the bank. They offer a great balance of structural integrity and aerodynamic benefit. If you want a reliable, middle-of-the-road solution that performs consistently, this is your best bet.
Lippert Components OEM Replacements
Control your RV entry door with the Lippert Friction Hinge Kit. This easy-to-install upgrade holds your door in place and prevents slamming, protecting your RV from wind damage.
Lippert is the giant behind many of the parts already on your RV, and their OEM replacements are the safest bet for maintaining your rig’s original specs. These parts are designed to be an exact match, which is critical if you are trying to maintain the specific aerodynamic profile intended by the manufacturer.
These are best for those who prefer to keep their rig as close to "factory" as possible. While they may not offer the extreme aerodynamic gains of a custom-built solution, they guarantee a perfect fit and easy installation. Stick with these if you value consistency and ease of sourcing.
Valterra Universal Fit Fender Covers
Universal fit products are a double-edged sword, but Valterra’s covers are a solid option for those with older or obscure rigs where model-specific parts are no longer manufactured. They are designed to be trimmed to size, allowing you to create a custom seal around your wheel well.
I’d only recommend these if you are comfortable with a jigsaw and some minor fabrication. They aren’t as sleek as custom-molded parts, but they allow you to close up open wheel wells that are currently killing your fuel economy. If you are a handy DIYer, this is a highly functional, budget-friendly solution.
Installation Tips for Better Drag
The secret to effective fender skirts isn’t just the product—it’s the seal. Use a high-quality, automotive-grade sealant or butyl tape between the skirt and the trailer body to ensure no air leaks through the mounting points. Any gap between the skirt and the wall will create a "whistle" or vibration, which indicates wasted energy.
Ensure that your hardware is flush-mounted. Protruding screw heads can create tiny vortices that disrupt laminar flow, so use countersunk screws whenever possible. A clean, flush installation is the difference between a simple aesthetic upgrade and a true aerodynamic improvement.
Material Durability and Road Wear
You’ll be facing UV exposure, extreme temperature swings, and constant vibration. ABS plastic is the industry standard for a reason: it’s lightweight and handles impact reasonably well, but it can become brittle over time. Always check the thickness of the material before purchasing, as thinner plastics are prone to cracking under high-speed wind pressure.
If you travel in cold climates, be extra cautious with cheaper plastics, as they tend to shatter upon impact with frozen road debris. Investing in a slightly thicker, UV-stabilized material will pay for itself by preventing premature replacement. Think of your fender skirts as a long-term investment in your rig’s structural health.
Maintaining Your RV Aerodynamics
Aerodynamics is a system, not a one-time fix. Regularly inspect your fender skirts for loose fasteners or gaps that may have opened up due to road vibration. Even a quarter-inch gap can compromise the airflow you worked so hard to optimize.
Keep the area behind the skirts clean of mud and debris buildup, which can add unnecessary weight and trap moisture against your trailer frame. A well-maintained aerodynamic setup is quiet, efficient, and protects your investment from the harsh realities of the open road. Keep these components tight, and your rig will thank you with better performance on every trip.
Maximizing your fuel efficiency is a game of inches, and upgrading your fender skirts is one of the most effective ways to win that game. By choosing the right material and ensuring a perfect, airtight installation, you turn your RV into a much more efficient machine. Take the time to select the right part for your specific rig, and you’ll notice the difference at the pump and on the open road.
